Rhonda Byrne is an Australian television writer and producer with a net worth of $60 million. Rhonda Byrne has built her net worth as author of her New Thought works The Secret a book, which has a film by the same name. Her book has sold 4 million copies, and the DVD had sold more than 2 million copies. On Australian TV she has appeared on the series World's Greatest Commercials and Marry Me. Born in Australia and began her career as a radio producer before moving into television production.